Fly-escape



PLY ESCAPE.

000004 00000 000000000000 000: 0000 000 0 0 00000000 0 0 O o 0 o oWM/000000nu000 0 0 0 0 0900000O`0 0 0 Patented Mar. 10, 1896 ANDREWEGRAHMVL PHOTGUI'NQWASHINGTOMD C (No Model.)

wwwmain UNITED STATES PATENT OFFICE.

ELGREEN I. CAMPBELL AND GEORGE E. SCHLESSER, OF NAHMA, MICHIGAN.

FLY-ESCAPE.

SPECIFICATION forming part of Letters Patent No. 556,251, dated March10, 1896.

Application filed August 27, 1895. Serial No. 560,698. (No model.)

will enable others skilled in the art to which it pertains to make anduse it, reference being had to the accompanying drawings, which formpart of this specification.

This invention pertains to improvements in ily-escapes, the obj ectbeing to provide such an attachment for window and door screens as willpermit a ready outward passage of the Iiies, but which will prevent themfrom returning and others entering the room.

With these objects in view our invention consists in the novel featuresof construction hereinafter fully described and claimed, and illustratedby the accompanying drawings, in which* Figure l is a perspective viewof a screen provided with our attachment. longitudinal sectional vieW ofthe same. Fig. 3 is a detail view of the cones removed from the screen.Fig. 4 is a detail view of the staple.

A designates the body of the screen, which is here shown as fitted to awindow-frame, but which may With equal eect be used upon door-frames,and formed therein is opening B.

Two cones C D are arranged over the outer side of opening B, the cone Cbeing provided with base-Harige E,While cone D has the loopiange E,which inca-ses iiange E. These iianges when thus secured together areadapted to be held in position to cover the opening in the screen by thewire staples G. The inner ends of these staples are clinched around themeshes of the screen proper, and thus a most secure hold is obtained, aswill be un derstood.

The apex of each cone is formed with an opening, the opening H of theinner cone, C, being slightly larger than the opening in the outer coneand has arranged around it the Fig. 2 is a' wire fingers or guards I,formed of the eX- tremities of the wires constituting the conenetting,and which, while permitting a free outward passage of the flies,effectually prevent the'in from returning. The iiies when onceimprisoned between the two cones and finding it impossible'to returnthrough the inner cone are forced to escape through the small opening Jin cone D, through which a return-passage is impossible.

Our improved iiy-escape is so constructed as to offer little or noimpediment to the iies during the outward passage, but, as beforestated, owing to its peculiar construction it is impossible for theinsects to return.

Any number of the cones may be arranged upon a single screen that may bedesired. The same may be applied with equal effect to doors, as will bereadily understood.

Having thus fully described our invention, what we claim, and desire tosecure by Letters Patent, is-

l. The combination of a fly-screen, netting cones C and D arranged oneWithin the other and positioned over an opening in the screen, each conehaving an opening in its apex, guard-fingers I surrounding the openingof the inner cone, a flange at the base of each cone, and staples Gextended through both of said flanges and secured to the screen,substantially as shown and described.

2. The combination ofthe screen, the double cones C and D arranged onewithin the other, the doubledor U-shaped ange at the base of cone D, theat flange at the base of cone C and fitting within the U-shaped flangementioned, and devices for securing the said united iianges over anopening in the screen, substantially as shown and described.

In testimony whereof We affix our signatures in presence of twowitnesses.

ELGREEN P. CAMPBELL. GEO. E. SCHLESSER.

Vitnesses:

F. W. GOOD, T. B. DAvIs.

